First the link you have is bad. There is an extra ) on the end. If you mean this one:
Its a RF (Radio Frequency) wireless trasmitter/reciever. It has no IrDA...
I have the TM 350 using the Toshiba drivers and my reports its 2.0:
Manufacturer Name: Cambridge Silicon Radio
HCI Version: 2.0
HCI Revision 0679
LMP Version: 2.0
LMP SubVersion: 0679
Also my AnyCom and i-Phono Bluetooth Stereo...
OK .. There are 2 problems here ..
First .. Yes replacing the keyboard should solve your problem ..
Second .. Having a beer the first thing in the morning when you wake up is a sure sign of a drinking problem :O Yes we know you...
When you get your Office disk back I'd suggest you reinstall Office doing a full install .. There is an option to have it leave all the install files on your hard drive .. Do this .. That way if you ever do an update it won't ask you for...